Fuse-replacing appliance



A. H. BUCKLEY.

FUSE REPLACING APPLIANCE.

APPLICATION min ocT.15,191s.

1,363,835.v Patented Dec. 28, 1920.

l T-TVE El f s f.

FT gli x UNITED STATES ARTHUR HERBERT BUCKLEY, O3? LITTLE COOGEE, NEW' SOUTH 1WALES, AUSTRALIA,

PATENT OFFICE.

ASSIGNOR T0 WILLIAM CHARLES BIDDLE, OE BEXLEY, NEW SOUTH WALES, AND VIRGIL GAVAN REILLY, OF SYDNEY, NEW SOUTH WALES.

FUSE-REPLACING APPLIANCE.

Application led October 15, 1918.

T o all whom t may concern:

Be it known that I, ARTHUR HERBERT BUCK- LEY, a subject of the King of Great Britain and Ireland, residing at Frisco, Barry street, Little Coogee, State of New South Wales, Commonwealth of Australia, have invented new and useful Improvements in Fuse-Replacing Appliances, of which the following is a specification.

This invention is for the purpose of replacing a fuse wire when the latter has been burnt out, thus breaking the electric circuit.` The appliance is inclosed within a box constructed of porcelain, or other suitable material. The appliance inclosed by the box comprises a porcelain block with two projections, one on each side; the top and the bottom peripheries of the block are formed into channels along the top one of which the section of wire, that will be fused, will pass. In each channel is a spring stud which, when the fuse wire passes over it, will be depressed; the fuse wire will be held in the jaws of a clip at each end of the channel, thus causing the spring stud to remain in a depressed position. The porcelain box and the porcelain block will each be provided with the necessary metal contact pieces, so that the circuit may always be closed so long as the fuse wire remains intact. The spindle of the block will be provided with a handle whereby it may be turned a half turn when the wire fuses. The spindle of the block will be provided with a ratchet wheel and pawl in order to prevent it from being turned backward. Other details necessary to the perfect operation of the appliance will be dealt with seriatz'm, when the drawings are considered.

In the accompanying sheet of drawings:

Figure l is a front view of the porcelain box from which the fuse replacing appliance has been removed.

Fig. 2 is a front elevation, partly in section, of the porcelain block, the inclosing circle being the inner periphery of the wall of the box. The left hand projection from the porcelain block is shown clothed with the necessary metallic contact pieces, the right hand projection being stripped in order to show the construction of the block.

Fig. 3 is a back elevation of the block, the same having been turned half around in a horizontal plane. This view is also partly Specification of Letters Patent.

Patented Dec. 28, 1920.

Serial No. 258,257.

in section showing` the disposition of one of the spring studs.

Fig. lis a sectional view taken on the line A-A of Fig. l, with the block in place. y Fig. 5 is a side elevation of the block and its operating mechanism, removed from the In Fig. 6, the items W, X, Y, are respectively, a plan, a side elevation and an end elevation of the metallic contact piece with which each naked projection from the porcelain block is clothed, while Z is an isometrical projection of one of the spring clips.

Fig. 7 is lan isometrical projection of a form of guide loops through which the fuse wire must pass from the drum or rcel to the clips. Any suitable style of guide loops may be adopted.

Fig. S is a plan of the bottom segment of the containing box, showing the small incline on the bottom of the box for opening the clip, as the porcelain block is rotated, thus releasing the severed end of the fuse wire, and the opening in the bottom of the wall of the box through which the loose end of wire can escape and fall to the ground.

In Fig. 1, 1 is a box from which the fuse replacing appliance has been removed; 2, 2, are metallic contact pieces, the function of which will be afterward explained; 3 is a metallic disk fitted into a recess in the bottom of the box; the function of the disk will be afterward explained; l is a small incline for tripping the clip as it passes when the spindle of the porcelain block is rotated; 5 is an incline on the disk 3, the function of which will be afterward explained; the dotted lines 6, 6, indicate the position of the aperture 6 (shown in Fig. 8) through which the loose end of the fuse wire will drop to the ground. The letters A, A, show the line of the section of the box in Fig. 4.

Referring now to Figs. 2, 3, 4, 5, the porcelain block is shown at 7, the two lateral proj ections 8, 9; the block is mounted on a spindle l0, which is provided with a handle 11 whereby it may be turned in the same direction as the hands of a watch move; the spindle will be provided with a ratchet wheel and pawl (not shown in the drawings) in order to prevent it from being turned in the wrong direction. Upon the spindle 10 will be mounted a small drum, reel or bobbin 12,

upon which the fuse wire will be wound, as

shown in F ig. 4. The top and bottom peripheries of the block 7 will be grooved to form channels 13 along one of which the fuse wire may be laid. Within the channels 13 will be the spring studs 14, one on each side of the spindle 10, the one projecting upward, the other downward. ll the essential details of the spring studs 14 will be readily grasped by referring to Fig. The stein of the spring stud will extend as far as the transverse hole 15; spring pins 16 will be placed in the holes 15, their heads bearing against. the metal disk 3 in the bottoni of the box 1. So long as the spring stud 14 is depressed by the pressure of the fuse wire above, the spring pin 16 cannot be forced farther into the hole 15, but when the fuse wire burns out, the stud 14 will be released from top pressure and will be forced upward by its spring, thus freeing the hole 15 so that the spring pin 16 may be forced in as it passes over the incline 5; so long as the fuse wire remains intact, the spring stud 14 will remain depressed, the spindle and the block cannot be rotated, because the head of the spring pin 16 will butt against the incline 5 but cannot give way because the hole 15 is plugged by the depressed stud, therefore, so long as the fuse remains intact no rotation of the spindle or of the block can take place. The bases of the naked projections 8, 9, will be clothed with metallic contact pieces 17 shown in detail at W, X, Y', Fig. 6, the spring clip 18, shown at Z, Fig. 6, being installed over the inclined part of the projection, the same being held in place by the contact piece 17. When they have been fixed in position on the projection the end plate Y of the contact piece 17 will make contact with the contact. pieces 2, 2, that are fixed in the bottone of the box 1. rEhe part Y may make contact with 2 in the manner shown in the drawing, (Fig. 4) g that is to say, the part Y may be caused to pass between the two tongues of the contact pieces 2. A guide piece 19, of any suitable construction, will be attached tothe wall of the box 1, but will project beyond its front edge so that the front loop shall be approximately opposite the drum or reel 12 upon which the fuse wire is wound; the fuse wire 22 will pass from the reel 12 to the first loop, thence to the second loop, which will be located as nearly as possible opposite the center of the jaws of the clip Z, the wire will be clipped between the jaws, will pass up the incline 2O of the contact pieces 17, through grooves 21 in the block 7 to the channel 13, over the top of the spring stud 14, along the channel 13 to the opposite end, down corresponding inclines on the opposite side of the block 7 to the clip over the projection 9, where it will be held. Incidentally. the spring stud 14 will be depressed by the tension of the fuse wire that passes over it and will remain depressed during such time as the fuse wire remains intact, but, directly the wire is fused, the spring stud 14 will be released from the pressure of the wire and will rebound to the posicion shown in Figs. 3 and a. In order 70 that the circuit may be 1re-formed, it will only be necessary to turn the handle 11 in the direction of the movement of the hands of a watch, when a -new length of fuse wire will be unwound from the reel 12, the cnd of the wire clamped in the clip-jaw to the left will be passed over the right side, the other spring stud will be brought into operation and depressed, the jaws of the clip ou the right side will pass downward where the incline 4 will open the jaw of the clip as it passes, thus releasing the loose end of the spent wire which will drop through the opening 6 in the bottom of the wall of the box, while, as it approaches the end of the half turn, the clip will seize the new wire from the reel, thus putting tension on the wire and depressing the second spring stud which, in its turn has been brought around to a new position. The space between the inclines on the right of the porcelain block and the inclines on the left of the block is the part of the wire that will be fused and that must be replaced by turning the handle 11.

It is important to notice that the opposite sides of the block are identical in every respect, and that when one channel is uppermost, and in operation, the other channel is below performing no function until, in its turn, it is brought to the top by turning the handle 11. By the turning of the handle, the fuse wire is unwound from the reel 12, passing through the guide loops 19 to the jaws of the clip on the left, the rotation of the block causing the clip to pass from the left side to the right side, carrying with it the wire which it clips, the new length of wire being, in its turn, seized by the jaws of the other clip coming under from the right to the left side. The new length of fuse wire is thus installed in position, automatically and synchronously, by the turning` of the handle 11, while the loose end of wire is at the same time released from the jaws of the clip on the right side.

I claim 1. In electric fuse wire replacing appliances, a rotating spindle, a porcelain block thereupon, the same being adapted to be rotated with the spindle, a channel along` the sides of the block, a spring stud in each channel, a metallic clip at each end of the porcelain block so disposed that when the fuse wire is stretched between the clips the spring stud shall be depressed as and for the purposes specified.

2. An electric fuse replacing device, cornprising a rotatable fuse holder, means for clamping a fuse to the holder, a movable pin for normally preventing rotation -of the the tension of its spring to lock said pin in the normal position and to release the same when the fuse is blown to permit rotation of 15 said holder.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ARTHUR HERBERT BUCKLE Y.

Witnesses:

R. MAssEY, P. R. STEWART. 

